samba - Jul 2006 - Samab - LDAP with root certificate

Hello,
we want to authenticate a Samba 3.0.7 server (on Linux Red Hat Enterprise 3 with
update 4) over a root certificate against a Novell LDAP server. We did not find
something about this in the HOWTOS.
With smbpasswd * w it is impossible, because the responsible LDAP department
does not give us the root password. It's the sama as the global root
password. :-)
"ldapsearch" works without authentivication.
Question:
Is there a possibility to import a root certificate in samba? Whenever, how!? Or
is there another way?

Thanks for help!
Bernd